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176 lines
4.1 KiB
176 lines
4.1 KiB
#!/bin/bash |
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# SPDX-License-Identifier: GPL-2.0 |
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# |
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# Copyright (C) 2018 Uladzislau Rezki (Sony) <[email protected]> |
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# |
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# This is a test script for the kernel test driver to analyse vmalloc |
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# allocator. Therefore it is just a kernel module loader. You can specify |
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# and pass different parameters in order to: |
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# a) analyse performance of vmalloc allocations; |
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# b) stressing and stability check of vmalloc subsystem. |
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TEST_NAME="vmalloc" |
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DRIVER="test_${TEST_NAME}" |
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# 1 if fails |
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exitcode=1 |
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# Kselftest framework requirement - SKIP code is 4. |
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ksft_skip=4 |
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# |
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# Static templates for performance, stressing and smoke tests. |
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# Also it is possible to pass any supported parameters manualy. |
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# |
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PERF_PARAM="single_cpu_test=1 sequential_test_order=1 test_repeat_count=3" |
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SMOKE_PARAM="single_cpu_test=1 test_loop_count=10000 test_repeat_count=10" |
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STRESS_PARAM="test_repeat_count=20" |
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check_test_requirements() |
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{ |
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uid=$(id -u) |
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if [ $uid -ne 0 ]; then |
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echo "$0: Must be run as root" |
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exit $ksft_skip |
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fi |
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if ! which modprobe > /dev/null 2>&1; then |
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echo "$0: You need modprobe installed" |
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exit $ksft_skip |
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fi |
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if ! modinfo $DRIVER > /dev/null 2>&1; then |
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echo "$0: You must have the following enabled in your kernel:" |
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echo "CONFIG_TEST_VMALLOC=m" |
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exit $ksft_skip |
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fi |
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} |
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run_perfformance_check() |
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{ |
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echo "Run performance tests to evaluate how fast vmalloc allocation is." |
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echo "It runs all test cases on one single CPU with sequential order." |
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modprobe $DRIVER $PERF_PARAM > /dev/null 2>&1 |
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echo "Done." |
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echo "Ccheck the kernel message buffer to see the summary." |
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} |
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run_stability_check() |
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{ |
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echo "Run stability tests. In order to stress vmalloc subsystem we run" |
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echo "all available test cases on all available CPUs simultaneously." |
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echo "It will take time, so be patient." |
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modprobe $DRIVER $STRESS_PARAM > /dev/null 2>&1 |
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echo "Done." |
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echo "Check the kernel ring buffer to see the summary." |
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} |
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run_smoke_check() |
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{ |
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echo "Run smoke test. Note, this test provides basic coverage." |
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echo "Please check $0 output how it can be used" |
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echo "for deep performance analysis as well as stress testing." |
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modprobe $DRIVER $SMOKE_PARAM > /dev/null 2>&1 |
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echo "Done." |
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echo "Check the kernel ring buffer to see the summary." |
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} |
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usage() |
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{ |
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echo -n "Usage: $0 [ performance ] | [ stress ] | | [ smoke ] | " |
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echo "manual parameters" |
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echo |
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echo "Valid tests and parameters:" |
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echo |
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modinfo $DRIVER |
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echo |
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echo "Example usage:" |
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echo |
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echo "# Shows help message" |
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echo "./${DRIVER}.sh" |
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echo |
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echo "# Runs 1 test(id_1), repeats it 5 times on all online CPUs" |
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echo "./${DRIVER}.sh run_test_mask=1 test_repeat_count=5" |
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echo |
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echo -n "# Runs 4 tests(id_1|id_2|id_4|id_16) on one CPU with " |
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echo "sequential order" |
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echo -n "./${DRIVER}.sh single_cpu_test=1 sequential_test_order=1 " |
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echo "run_test_mask=23" |
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echo |
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echo -n "# Runs all tests on all online CPUs, shuffled order, repeats " |
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echo "20 times" |
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echo "./${DRIVER}.sh test_repeat_count=20" |
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echo |
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echo "# Performance analysis" |
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echo "./${DRIVER}.sh performance" |
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echo |
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echo "# Stress testing" |
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echo "./${DRIVER}.sh stress" |
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echo |
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exit 0 |
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} |
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function validate_passed_args() |
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{ |
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VALID_ARGS=`modinfo $DRIVER | awk '/parm:/ {print $2}' | sed 's/:.*//'` |
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# |
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# Something has been passed, check it. |
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# |
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for passed_arg in $@; do |
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key=${passed_arg//=*/} |
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val="${passed_arg:$((${#key}+1))}" |
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valid=0 |
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for valid_arg in $VALID_ARGS; do |
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if [[ $key = $valid_arg ]] && [[ $val -gt 0 ]]; then |
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valid=1 |
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break |
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fi |
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done |
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if [[ $valid -ne 1 ]]; then |
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echo "Error: key or value is not correct: ${key} $val" |
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exit $exitcode |
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fi |
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done |
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} |
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function run_manual_check() |
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{ |
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# |
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# Validate passed parameters. If there is wrong one, |
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# the script exists and does not execute further. |
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# |
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validate_passed_args $@ |
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echo "Run the test with following parameters: $@" |
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modprobe $DRIVER $@ > /dev/null 2>&1 |
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echo "Done." |
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echo "Check the kernel ring buffer to see the summary." |
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} |
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function run_test() |
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{ |
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if [ $# -eq 0 ]; then |
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usage |
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else |
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if [[ "$1" = "performance" ]]; then |
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run_perfformance_check |
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elif [[ "$1" = "stress" ]]; then |
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run_stability_check |
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elif [[ "$1" = "smoke" ]]; then |
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run_smoke_check |
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else |
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run_manual_check $@ |
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fi |
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fi |
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} |
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check_test_requirements |
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run_test $@ |
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exit 0
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